Use these options to specify how the date range returns results. "Exact" means that the start and end dates of descriptions returned must fall entirely within the date range entered. "Overlapping" means that any description whose start or end dates touch or overlap the target date range will be returned.

The series includes cassette tapes of seminars and lectures, reel-to-reel tapes, reels of film, slides and photographs of staff, students and events.The photographs and slides have been placed in an archival album.